Helical antenna matching problem in HFSS

[Eng_student08]

Hi all,
I am new to the HFSS environment, and I am modeling a helical antenna using HFSS. Unfortunately, the matching isn't good at all, although achieved the predicted gain, which has nothing to do with the matching. Kindly anyone have modeled a helix before, and got reasonable matching with HFSS? If could send an HFSS file, that will be great.

Thanks a lot...

 

[abdullah_nauroze]

you need a quarter-wave matching stripline to compensate 140 ohms of helix with 50 ohms of coaxial line. you can use the txline software to calculate the stripline width etc.

good day

 

[Eng_student08]

Thank you. Have you tested or built a helix before and got a good matching?

 

[ekinoq]

can you share link about the txline software